Q. In extrusion of metals, which of the following statement is true ?

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Q. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about __________ MeV.

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Q. Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans ?

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Q. Machinability of hard alloys and tool steels is improved by

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Q. Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

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Q. Powder metallurgy process does not make metal powder by

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Q. In the blast furnace, incorporation of water vapour in the blast gives the following effect.

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Q. Pick out the wrong statement.

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Q. The usual energy consumption in electric arc furnace steel making is __________ KWh/ton of steel.

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Q. Maximum permissible air velocity in pipelines is about __________ metre/second.

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Q. Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

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Q. The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be

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Q. Energy of the sun arises mainly from __________ reactions.

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Q. Which of the following fastening devices has a head at one end and a nut fitted to the other ?

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Q. Sudden fall of atmospheric pressure by a large amount is an indication of the

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Q. Annealing ofwhite cast iron produces __________ iron.

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Q. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)

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Q. A solar cell converts the sunlight directly into __________ energy.

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Q. If a nuclear reactor produces more fissile nuclear fuel than it consumes, then it is called a __________ reactor.

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Q. Wrought iron is never shaped by

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